Data transmission method, base station, and terminal

A data transmission method and base station technology, which are applied in connection management, wireless communication, electrical components, etc., can solve problems such as inability to effectively realize data forwarding, and achieve the effects of reducing network burden, delay, and signaling load.

Pending Publication Date: 2019-01-18
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the case of UE cell handover, the current solution cannot effectively realize this kind of data forwarding

Method used

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  • Data transmission method, base station, and terminal
  • Data transmission method, base station, and terminal
  • Data transmission method, base station, and terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0109] Embodiment 1: Base station configures DRX parameters and valid period

[0110] When the UE's downlink data arrives at the source base station, the source base station (anchor base station) can determine the number and interval of subsequent uplink and downlink data packets according to the UE's business type and business model, and can also refer to the UE's capability, moving speed and The DRX configuration of the UE in the idle state and the connected state is to configure a reasonable DRX configuration for the UE to monitor downlink data in the preset state (that is, the above-mentioned DRX parameters, the same below). At the same time, in order to save power, the source base station can also set a validity period for the DRX configuration in consideration of the time of data packet transmission. During the validity period, the UE adopts the DRX configuration of monitoring downlink data in the preset state configured by the source base station; , the DRX configuratio...

Embodiment 2

[0114] Embodiment 2: The base station configures DRX parameters and activates / deactivates DRX parameters

[0115] When the UE's downlink data arrives at the source base station, the source base station may inform the target base station to activate DRX configuration of the UE in the connected state.

[0116] That is to say, when the downlink data of the UE arrives at the source base station, the source base station will page the UE within a certain range to notify the UE of the arrival of the downlink data. The source base station sends the paging message or downlink data packet to the target base station through an interface (for example, X2). In addition, the source base station will inform the target base station of the DRX configuration of the activated UE in the connected state through an interface (for example, X2), and at the same time, can also inform the target base station of the DRX configuration of the UE in the connected state. The interface message may be a pagi...

Embodiment 3

[0122] Embodiment 3: configuration of uplink resources

[0123] For the downlink data packets of the UE, the UE needs to perform uplink HARQ ACK / NACK feedback. However, in a default state, the UE has no uplink resources. Then, when the target base station is sending downlink data packets for the UE, it can allocate the PUCCH resource of the cell to the UE according to the service type and the load of the cell, and at the same time, can also indicate the validity period of the PUCCH resource (for example, the timer duration or times), and notify the UE in the paging message or PDCCH command or MAC CE.

[0124] After receiving the configuration of PUCCH resources, the UE will feed back uplink HARQ ACK / NACK according to the configured resources. If the base station configures the validity period, the UE will only feed back on the PUCCH resource within the validity period.

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Abstract

The invention discloses a data transmission method, a base station, and a terminal. The method comprises the steps that the base station configures a DRX parameter and/or measurement parameter for UEwhen the UE is in a preset state or enters the preset state, wherein the preset state is a state that an air interface between the UE and the base station is switched off and the connection, corresponding to the UE, of the base station and a core network remains. The method can achieve the data transmission through the configuration of the DRX parameter when the UE is in a non-connected or unactivated state, and can prevent the initiation of a random access process of the UE in the data transmission process, thereby effectively reducing the time delay. In addition, because the DRX mode is employed for data transmission, the method can well solve a problem of data forwarding between the base stations, effectively responds to a condition that the UE switches a cell, reduces the signaling load between the base stations, and reduces the network load.

Description

technical field [0001] The present invention relates to the communication field, and in particular, relates to a data transmission method, a base station and a terminal. Background technique [0002] The existing medium and long-term evolution system (LTE, Long Term Evolution) mainly consists of three devices: user equipment (also called terminal, UE, User Equipment), core network (CN, Core Network) and base station (eNB, Evolved Node B), its network architecture can be found in figure 1 shown. Wherein, a mobility management entity (MME, Mobility Management Entity) in the core network is mainly responsible for signaling transmission, and a serving gateway (SGW, Serving GetWay) is mainly responsible for data transmission. The interface between the UE and the eNB is Uu, and the interface between the eNB and the core network is S1. [0003] figure 2 The protocol architecture of UE, eNB and MME is shown. see figure 2 , for UE, protocol layer RRC (Radio Resource Control),...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/10H04W76/28H04W76/27
CPCH04W24/10
Inventor 牛丽吴昱民
Owner ZTE CORP
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